AWS CloudWatch Log Stream Deletion

Elastic Stack Serverless Security

Identifies the deletion of an AWS CloudWatch log stream, which permanently deletes all associated archived log events with the stream.

Rule type: query

Rule indices:

• filebeat-*
• logs-aws*

Severity: medium

Risk score: 47

Runs every: 10m

Searches indices from: now-60m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References:

• https://awscli.amazonaws.com/v2/documentation/api/latest/reference/logs/delete-log-stream.html
• https://docs.aws.amazon.com/AmazonCloudWatchLogs/latest/APIReference/API_DeleteLogStream.html

Tags:

• Elastic
• Cloud
• AWS
• Continuous Monitoring
• SecOps
• Log Auditing

Version: 7

Rule authors:

• Elastic

Rule license: Elastic License v2

The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

event.dataset:aws.cloudtrail and event.provider:logs.amazonaws.com and event.action:DeleteLogStream and event.outcome:success

Framework: MITRE ATT&CKTM

• Tactic:

  • Name: Impact
  • ID: TA0040
  • Reference URL: https://attack.mitre.org/tactics/TA0040/

• Technique:

  • Name: Data Destruction
  • ID: T1485
  • Reference URL: https://attack.mitre.org/techniques/T1485/

• Tactic:

  • Name: Defense Evasion
  • ID: TA0005
  • Reference URL: https://attack.mitre.org/tactics/TA0005/

• Technique:

  • Name: Impair Defenses
  • ID: T1562
  • Reference URL: https://attack.mitre.org/techniques/T1562/

• Sub-technique:

  • Name: Disable or Modify Tools
  • ID: T1562.001
  • Reference URL: https://attack.mitre.org/techniques/T1562/001/